PYTHON-3636 MongoClient should perform SRV resolution lazily #1875

Job	Run time
Build wheels for manylinux_x86_64	2m 13s
Build wheels for manylinux_aarch64	11m 19s
Make SDist	37s
Build wheels for manylinux_ppc64le	10m 45s
Build wheels for manylinux_s390x	11m 14s
Build wheels for manylinux_i686	2m 35s
Build wheels for win_amd6	5m 43s
Build wheels for win32	6m 8s
Build wheels for macos	3m 29s
Download Wheels	8s
	54m 11s

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